Obama: Boston culprits to feel 'weight of justice'

Monday, April 15, 2013 | 6:20 p.m. CDT; updated 8:09 p.m. CDT, Monday, April 15, 2013

WASHINGTON — A stony-faced President Barack Obama declared that those responsible for the explosions at the Boston Marathon "will feel the full weight of justice," but he urged a nervous nation not to jump to conclusions. Top lawmakers declared the deadly incident an act of terrorism, and a White House official said it was being treated that way.